Battery box



FIG. 1 is a front elevational view of a battery box showing my new design;

FIG. 2 is a top view thereof;

FIG. 3 is a right side elevational view, the left side being a mirror image thereof;

FIG. 4 is a bottom plan view thereof; and

FIG. 5 is a rear elevational view thereof. 

The ornamental design for a battery box, as shown and described. 